Rotary wheel-harrow



(JN0 Model.)

P. P. BALDNER sa H. DSABIN.A ROTARY WHEEL HARROW.

No. 508,536. Patented N0v.414,189s

Horace Sabm 'UN-HBD' STATES PATENT FREDERICK P. BALDNER AND HORACE D. SABIN, OF XENIA, OHIO.

ROTARY wHEEL-HARRow.

SPECIFICATION forming part of lLetters VPatent No. 508,536, dated November 14, 1893.

Application filed October 3. 1892.4 Serial No. 447,689. (No model.) v

NER and HORACE D. SABIN,both of Xenia, in

the county of Greene and State of Ohio,have` invented certain new and useful Improvements in Rot-aryY Wheel-Harrows, of which the following is a specication. v

The present improvements relate to wheel or sulky harrows, having drive wheelsV and a rlders seat, and having shafts armed with halirow teeth rotatively mountedfon the harrow frame and adapted to be driven bythe drive wheels, said shafts being capable of being raised and lowered and of being coupled to and uncoupled from the drive wheel. The harrow can also be used as a tedder for spreading hay.

The improvements are illustrated in the ac-f companying drawings, Whereini lFigure l, is a plan View of the harrow. Fig. 2, 1s a rear view thereof. Fig. 3, is a vertical section in a planeindicated bythe line 3 3 in Fig. 1. Figs. 4and 5, are details of the sliding pinions. -V

A, is the main axle of the harrow, upon which the drive wheels B B, are mounted.

C, is the main frame of the harrow, carrying the drivers seat D vand the draft-pole E, said frame being preferably pivotally connected with the axle by means of the side bars a a constituting part of the frame, which are suspended upon the axle by collars b b forming the ends of said bars a a and embracing the ax e.

r The axle A and side bars a c. of the main frame are preferably of metal. Also pivotally connected with theaxle A, by collars c c embracing the axle, are three parallel cross bars F F, which are connected forward of the axle by two longitudinal rails G G. The cross-bars F F and rails G, G, constitute a balanced tilting tooth frame. The bars F F are preferably of metal, the collars c c constituting a part thereof. Each collar c is at approximately the middle of its bar F, and the rear end of each bar F extends downwardly and backwardlybelow and behind the axle where it terminates in a sleeve d. v One of the bars F, is at the center of theaxle A, and the other two are near the ends thereof and near the drive wheels. The three sleeves d d d at the rear lower ends of the bars F constitute bearings for two independently-mounted tooth shafts H H. These two tooth shafts are parallel with the axle A, and are in line with each4 other. Each tooth shaft is armed. witha plurality of teeth e e which are preferably radially and spirallymounted on the shaft. Each shaft extends outwardly beyond its outer bearing d, and exterior to saidQouter bearing it carries adriven pinionf which mesheswith an internal gear g carried by the adjacent drive-wheel B. The shafts H, with their teeth e are thus driven by the traction wheels B, B, and owing to the two tooth shafts F F being independently mounted, eachis driven by its traction wheelB independently of the other, whereby the har-row may be readily turned Within a short radius.

The pivotal connection between the tilting tooth frame and the axle permits the tooth shafts to be elevated and depressed s0 that the teeth may either encounter the earth to harrow the same,'or may be elevated above the VVsurface of the ground so as to be entirely free therefrom, as when the barrow is being driven to and from the plowed field, or when rocks or other obstructions are encountered in the eld. To eiect the tilting of the tooth frame and to enable it to be maintained in any desired positionwithin the limits of its movement, a leverI is pivoted to the main frame, with its handle end within convenient reach from the drivers seat D, and its lower end connected by a link J with the tooth-frame;

and the lever I -carries a dog s (3o-operating .with a fixed rack h on the main harroW-frame whereby the tilting tooth-frame may be mainessary that the shafts F should revolve except when in the process of harrowing. Accordingly provision is made for coupling and uncoupling the pinionsfand gears g. To this end the pinionsfare feathered to the shafts F so that they may slide thereon into and out, of mesh with the gears g. The hubs of the pinions ff have annular grooves t 't' respectively, with which co-operate the forked ends respectively of forked levers K which are centrally pivoted to the tilting tooth-frame, their upper ends being connected by links L L respectively to au operating lever M, the points of connection between the links L, L, and operating lever M being on opposite sides of the pivotal connection mbetween said lever M and the tilting tooth-frame. The front end of lever M has a handle N within convenient reach of the occupant of the drivers seat D. When the lever M occupies its position shown in Fig.1,`ooth pinionsf are in gear with gears g, and when lever M occupies the position shown in Fig. 2, both pinions are out of gear, the two pinions being simultaneously operated. 'lo maintain the lever M in these two positions, 'the lever M co-operates with a notched retaining bar O on the tilting frame, the lever M being made of metal and being sufficiently elastic to engage the notches in the retaining bar O, and to be readily disengaged therefrom. It will be noted that when the pinions are uncoupled from the gears g nothing is driven by the traction wheels and they are relieved from all friction due to such driven parts.

The improved harrow can be conveniently used as a tedder for spreading hay, the adjustment of the tilting tooth-frame permitting the teeth e e to be placed at the propel' height for this purpose.

We'claim as our invention- The combination of axle A, wheels B B mounted on said axle and having gears g g, main frame C comprising bars a a with collars b b embracing said axle, seat D carried bysaid main frame,a tilting tooth-frame composed of bars F F having collars c c embracing said axle and bearings d d, and of rails G G connecting said bars F F forward of said axle, shafts H H mounted independently of each other back of said axle and having teeth e e and sliding pinions ffwith grooves t t', said pinions co-operating with said gears g g, lever I pivoted to said main frame forward of the axle, link J connected at its forward end to said lever I and at its rear end to said tilting tooth frame back of the axle, levers K K pivoted to the outer bars F F of the tilting tooth frame with their lower ends engaging the groovesi of the pinions ff respectively, operating lever M pivoted to the tilting tooth frame, and links L L pivoted at their outer ends to the levers K K respectively and at their inner ends to the lever M on opposite sides of the pivot thereof, said lever M having handle N and retaining bar O, substantially as set forth.

In testimony that we claim the invention above set forth we affix our signatures in presence of two witnesses.

FREDERICK P. BALDNER. HORACE D. SABIN.

Witnesses:

J AMES P. TowNsBY, HEBER DOUTHETT. 

